-video soft displays the video correctly, albeit at about 1/10 speed. -video opengl displays the video at full speed, but only fills the left half of the screen.
The only LD game I have is Cube Quest, and I only noticed this problem when it was released. I posted about this a couple of months ago, but it wasn't critical at the time because I had access to a Windows box where it worked. But that box got repurposed into a server when my old server died.